Transmission mechanism.



A. R. & F. S. WELSH. TRANSMISSION MECHANISM.

APPLICATION FILED AUG.7, 1911 1,122,341 Patented Dec. 29, 1914.

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f UNITED W T ALLIE R. WELCH AND FRED S. WELCH, OF PONTIAC, MICHIGAN.

TRANSMISSION MECHANISM.

Application filed August 7, 1911.

To all whom it may concern:

Be it known that we, ALLIE R. WELCH and FRED S. WELGH, citizens of theUnited States, residing at Pontiac, county of Oakland, State ofMichigan, have invented a certain new and useful Improvement inTransmission Mechanism, and declare the following to be a full, clear,and exact description of the same, such as will enable others skilled inthe art to which it pertains to make and use the same, reference beinghad to the accompanying drawings, which form a part of thisspecification.

Our invention relates to automobiles and an object of ourimprovements isto provide an improved arrangement of the transmission mechanism withreference to the rest of the automobile and an improved construction ofsaid mechanism. We secure this in the device illustrated in theaccompanying drawings, in which Figure 1, is an elevation of anautomobile embodying our invention, parts being broken away to show theinternal construction. Fig. 2, is a view similar to Fig. 1 showing theparts in a different position. Fig. 3, is a detail sectional view of oneof the joints. Fig. 4, is a detail view showing the worm and wheel bywhich the driving shaft is actuated.

A, indicates a driving wheel and B, a front wheel.

H, is the driving shaft through which the driving wheel is actuated.

I, is a shaft upon which is a worm K, and J is a worm wheel upon thedriving shaft H with which the worm K engages.

M, is a shaft united at one end to the shaft I by a universal joint L.The shaft M is united at the other end by a universal joint N to theshaft 0. The shaft 0 is pivoted in a ball bearing P at its end remotefrom the shaft M. This ball bearing is shown in section in Fig. 3.

E, is the engine and F the main shaft thereof. G, is a fly-wheel uponthe main shaft F. Said engine is so located in the apparatus shown thatits main shaft shall extend vertically. The fly-wheel G is provided withtwo friction surfaces, one G is a plane surface extending parallel tothe plane of rotation to the wheel. The second G is a conical surfacesurrounding the wheel G and the plane surface G Upon the shaft 0 is afriction wheel Q, adapted to slide longitudinally on said shaft but re-Specification of Letters latent.

Serial No. 642,608.

Patented Dec. 29, 1914.

strained from angular motion relative thereto. This construction is onewell understood and will not therefore be described in detail.

4 is a lever pivoted to a stationary support at 5 and connected by a rod6 with the friction wheel Q. By this or other suitable construction thewheel Q, may be adjusted to different positions along the shaft 0. Thefriction wheel Q has two friction surfaces; one acylindrical surfacecoaxial with the shaft 0 and indicated by the reference letter S. Theother a conical surface R. The friction surface S is of greater diameterthan the friction surface R. v

T, is a lever pivoted at t and adapted to raise the connected ends ofthe shafts M and O and to lower the same. There is a pedal 7 on the freeend of the lever T by which the same may be depressed.

8 is a spring acting to raise the lever T and press the one or the otherfriction surfaces of the wheel Q, against a corresponding surface on thefiy-wheel G. When the shafts M and O are at their lower position, asshown in Fig. 1, the friction surface S friction surface G and therotation of the wheel G will drive the shaft 0 and shaft M.

which will carry with it the shaftI actuating the main shaft of theengine through the worm K and gear wheel J. The friction wheel Q, may bemoved diametrically to the wheel to secure a higher or lower speed or toreverse when the friction wheel Q, is moved past the center of the wheelG. When the high speed is to be used, which is generally the case, thefriction wheel Q is moved toward the periphery of the wheel Gr and thewheel Q, is raised by the action of the spring 8 so as to bring theconical sur face B into contact with the conical surface G Thesesurfaces being properly shaped they will act upon each other without theusual grinding motion incident to disk and wheel friction gearing.

What we claim is 1. The combination of a friction disk, a shaftextending approximately parallel to said disk, a friction wheel uponsaid shaft adapted to engage said disk, said shaft consisting of twoparts placed end to end, said parts being supported in bearings whichare pivotally supported, a universal joint connecting the adjacent endsof the parts of said shaft, and means for bending said shaft at theuniversal joint to bring said friction wheel toward or away from saiddisk.

2. The combination of a friction disk, a shaft extending approximatelyparallel to said disk, a friction wheel upon said shaft adapted toengage said disk, said shaft consisting of two parts placed end to end,said parts being supported in bearings which are pivotally supported, auniversal joint connecting the adjacent ends of the parts of said shaft,means for bending said shaft at the universal joint to bring saidfriction wheel toward or away from said disk, and means for moving saidwheel along one portion of said shaft to engage the said disk atdifi'erent distances from its center.

3. The combination of a friction disk having a plane friction surfacesurrounded by a conical friction surface concentric with said planesurface, a shaft extending approximatelyparallel to said disk, saidshaft consisting of two parts, said parts being supported in bearingswhich are pivotally supported so as to permit a turning of said shaftabout the pivoted ends toward and away from said disk, a universal jointuniting the adjacent ends of the parts of said shaft, a cylindricalfriction wheel on said shaft adapted to engage the plane surfaces ofsaid disk, and a conical wheel on said shaft adapted to engage theconical surface of said disk, and means for moving the adjacent ends ofthe parts of said shaft toward and away from said disk for the purposedescribed.

In testimonywhereof, we sign this specification in the presence of twowitnesses. I

ALLIE R. WELCH. FRED S. WELCH.

Witnesses VIRGINIA C. SPRATT, ELLIOTT J. STODDARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. c."

